RV Plumbing & Water Systems: Complete Maintenance Guide
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Suburban SDN2U Water Heater Won't Stay Lit: Thermocouple Position Fix
Suburban SDN2U thermocouple position issues are known on 2024-2025 models. Adjust thermocouple tip position to match working burner - should sit in outer flame cone. This is likely warranty repair on new Jayco. Document issue before DIY attempts.